Which three statements are true about single-row functions? (Choose three.)

Which three statements are true about single-row functions? (Choose three.)
A . They can be used only in the WHERE clause of a SELECT statement
B . The argument can be a column name, variable, literal or an expression
C . The data type returned can be different from the data type of the argument
D . They can be nested to any level
E . They can accept only one argument
F . They return a single result row per table

Answer: BCF

Explanation:

Reference: https://www.folkstalk.com/2012/01/oracle-single-row-functions-examples.html

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